A wrinkly little alien who looks like a thumb somehow had the whole planet in tears by '82.
Fun fact: M&M's declined the product placement deal, so Reese's Pieces were used instead, boosting their sales by 65%.
They picked the most unreliable car ever built and turned it into the coolest thing on four wheels.
Fun fact: Eric Stoltz was originally cast as Marty and filmed for five weeks before being replaced by Fox.